I’ve created a webapp bundle that does just that. Unfortunately, such bundles at present only work with the stand-alone version of Prism. The Firefox add-on is really a better way to run Prism, but if you’re using it you’ll need to do a little manual mucking in your webapp profile to use this bundle.

Stand-Alone Bundle

So, if you just want the bundle, here you go. Note that I haven’t really tested it on the stand-alone version, so please let me know if something is broken.

Hack Your Webapp

As I said, if you’re using the add-on version, you’ll need to do a little manual hacking. After you create the webapp, as described in my earlier post, open up Explorer and navigate to your Prism webapp bundle cache. On Windows, this is in %APPDATA%\WebApps (something like C:\Users\Brian\AppData\Roaming\WebApps); on Linux, it is ~/.webapps. You should see your Google Wave webapp in that directory. Add the webapp.js script to that directory, and also add in images/google-wave-52×32.png. Now you should get a toaster pop-up and task bar notification when there are new waves.

It would be nice if Google were to add a <link rel=”webapp”> to Wave, referencing an appropriate bundle. If anybody there sees this and cares to use my code as a crude starting point, I am releasing this code under an MIT license.